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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">gen_contours_skeleton_xld</span><span data-if="c" style="display:none;">gen_contours_skeleton_xld</span><span data-if="cpp" style="display:none;">GenContoursSkeletonXld</span><span data-if="dotnet" style="display:none;">GenContoursSkeletonXld</span><span data-if="python" style="display:none;">gen_contours_skeleton_xld</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">gen_contours_skeleton_xld</span><span data-if="c" style="display:none;">gen_contours_skeleton_xld</span><span data-if="cpp" style="display:none;">GenContoursSkeletonXld</span><span data-if="dotnet" style="display:none;">GenContoursSkeletonXld</span><span data-if="python" style="display:none;">gen_contours_skeleton_xld</span></code> — Convert a skeleton into XLD contours.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>gen_contours_skeleton_xld</b>(<a href="#Skeleton"><i>Skeleton</i></a> : <a href="#Contours"><i>Contours</i></a> : <a href="#Length"><i>Length</i></a>, <a href="#Mode"><i>Mode</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>gen_contours_skeleton_xld</b>(const Hobject <a href="#Skeleton"><i>Skeleton</i></a>, Hobject* <a href="#Contours"><i>Contours</i></a>, const Hlong <a href="#Length"><i>Length</i></a>, const char* <a href="#Mode"><i>Mode</i></a>)</code></p>
<p>
<code>Herror <b>T_gen_contours_skeleton_xld</b>(const Hobject <a href="#Skeleton"><i>Skeleton</i></a>, Hobject* <a href="#Contours"><i>Contours</i></a>, const Htuple <a href="#Length"><i>Length</i></a>, const Htuple <a href="#Mode"><i>Mode</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>GenContoursSkeletonXld</b>(const HObject&amp; <a href="#Skeleton"><i>Skeleton</i></a>, HObject* <a href="#Contours"><i>Contours</i></a>, const HTuple&amp; <a href="#Length"><i>Length</i></a>, const HTuple&amp; <a href="#Mode"><i>Mode</i></a>)</code></p>
<p>
<code><a href="HXLDCont.html">HXLDCont</a> <a href="HRegion.html">HRegion</a>::<b>GenContoursSkeletonXld</b>(Hlong <a href="#Length"><i>Length</i></a>, const HString&amp; <a href="#Mode"><i>Mode</i></a>) const</code></p>
<p>
<code><a href="HXLDCont.html">HXLDCont</a> <a href="HRegion.html">HRegion</a>::<b>GenContoursSkeletonXld</b>(Hlong <a href="#Length"><i>Length</i></a>, const char* <a href="#Mode"><i>Mode</i></a>) const</code></p>
<p>
<code><a href="HXLDCont.html">HXLDCont</a> <a href="HRegion.html">HRegion</a>::<b>GenContoursSkeletonXld</b>(Hlong <a href="#Length"><i>Length</i></a>, const wchar_t* <a href="#Mode"><i>Mode</i></a>) const  <span class="signnote">
            (
            Windows only)
          </span></code></p>
</div>
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<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>GenContoursSkeletonXld</b>(<a href="HObject.html">HObject</a> <a href="#Skeleton"><i>skeleton</i></a>, out <a href="HObject.html">HObject</a> <a href="#Contours"><i>contours</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Length"><i>length</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Mode"><i>mode</i></a>)</code></p>
<p>
<code><a href="HXLDCont.html">HXLDCont</a> <a href="HRegion.html">HRegion</a>.<b>GenContoursSkeletonXld</b>(int <a href="#Length"><i>length</i></a>, string <a href="#Mode"><i>mode</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>gen_contours_skeleton_xld</b>(<a href="#Skeleton"><i>skeleton</i></a>: HObject, <a href="#Length"><i>length</i></a>: int, <a href="#Mode"><i>mode</i></a>: str) -&gt; HObject</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">gen_contours_skeleton_xld</span><span data-if="c" style="display:none">gen_contours_skeleton_xld</span><span data-if="cpp" style="display:none">GenContoursSkeletonXld</span><span data-if="com" style="display:none">GenContoursSkeletonXld</span><span data-if="dotnet" style="display:none">GenContoursSkeletonXld</span><span data-if="python" style="display:none">gen_contours_skeleton_xld</span></code> converts the input skeleton
(e.g., edges) <a href="#Skeleton"><i><code><span data-if="hdevelop" style="display:inline">Skeleton</span><span data-if="c" style="display:none">Skeleton</span><span data-if="cpp" style="display:none">Skeleton</span><span data-if="com" style="display:none">Skeleton</span><span data-if="dotnet" style="display:none">skeleton</span><span data-if="python" style="display:none">skeleton</span></code></i></a>, which is assumed to contain
mostly one pixel wide regions (see <a href="skeleton.html"><code><span data-if="hdevelop" style="display:inline">skeleton</span><span data-if="c" style="display:none">skeleton</span><span data-if="cpp" style="display:none">Skeleton</span><span data-if="com" style="display:none">Skeleton</span><span data-if="dotnet" style="display:none">Skeleton</span><span data-if="python" style="display:none">skeleton</span></code></a>), into XLD
contours.
</p>
<p>The algorithm first attempts to transform the regions to contain only line
segments in 8-neighborhood. In a second step, the junction points are
labeled. After this, <code><span data-if="hdevelop" style="display:inline">gen_contours_skeleton_xld</span><span data-if="c" style="display:none">gen_contours_skeleton_xld</span><span data-if="cpp" style="display:none">GenContoursSkeletonXld</span><span data-if="com" style="display:none">GenContoursSkeletonXld</span><span data-if="dotnet" style="display:none">GenContoursSkeletonXld</span><span data-if="python" style="display:none">gen_contours_skeleton_xld</span></code> tries to generate
contours which end in junction or end points, in particular for junction
points of the following configurations (in all four possible
rotations):
<span class="pre">
  1  0  1     1  0  1     1  0  0     1  0  0     0  1  0     0  1  0
  0  2  0     0  2  0     0  2  1     0  2  1     0  2  1     1  2  1
  0  0  1     1  0  1     0  1  0     1  0  0     0  1  0     0  1  0
</span>
where 0 = background, 1 = foreground, and 2 = junction point.
</p>
<p>After this, all contours having at least <a href="#Length"><i><code><span data-if="hdevelop" style="display:inline">Length</span><span data-if="c" style="display:none">Length</span><span data-if="cpp" style="display:none">Length</span><span data-if="com" style="display:none">Length</span><span data-if="dotnet" style="display:none">length</span><span data-if="python" style="display:none">length</span></code></i></a> points
are returned.
Since contours are split at junction points, possibly long contours
may be split into several short segments because of short adjacent
lines, even if they are longer than <a href="#Length"><i><code><span data-if="hdevelop" style="display:inline">Length</span><span data-if="c" style="display:none">Length</span><span data-if="cpp" style="display:none">Length</span><span data-if="com" style="display:none">Length</span><span data-if="dotnet" style="display:none">length</span><span data-if="python" style="display:none">length</span></code></i></a> points, if
<a href="#Mode"><i><code><span data-if="hdevelop" style="display:inline">Mode</span><span data-if="c" style="display:none">Mode</span><span data-if="cpp" style="display:none">Mode</span><span data-if="com" style="display:none">Mode</span><span data-if="dotnet" style="display:none">mode</span><span data-if="python" style="display:none">mode</span></code></i></a> = <i><span data-if="hdevelop" style="display:inline">'filter'</span><span data-if="c" style="display:none">"filter"</span><span data-if="cpp" style="display:none">"filter"</span><span data-if="com" style="display:none">"filter"</span><span data-if="dotnet" style="display:none">"filter"</span><span data-if="python" style="display:none">"filter"</span></i> was selected. This can be avoided by setting
<a href="#Mode"><i><code><span data-if="hdevelop" style="display:inline">Mode</span><span data-if="c" style="display:none">Mode</span><span data-if="cpp" style="display:none">Mode</span><span data-if="com" style="display:none">Mode</span><span data-if="dotnet" style="display:none">mode</span><span data-if="python" style="display:none">mode</span></code></i></a> = <i><span data-if="hdevelop" style="display:inline">'generalize1'</span><span data-if="c" style="display:none">"generalize1"</span><span data-if="cpp" style="display:none">"generalize1"</span><span data-if="com" style="display:none">"generalize1"</span><span data-if="dotnet" style="display:none">"generalize1"</span><span data-if="python" style="display:none">"generalize1"</span></i>. In this case, the contours are
generated as if the segments shorter than <a href="#Length"><i><code><span data-if="hdevelop" style="display:inline">Length</span><span data-if="c" style="display:none">Length</span><span data-if="cpp" style="display:none">Length</span><span data-if="com" style="display:none">Length</span><span data-if="dotnet" style="display:none">length</span><span data-if="python" style="display:none">length</span></code></i></a> were not
contained in the input region.  In order to preserve line segments,
which are split into very short segments by the crossing of short
lines, <a href="#Mode"><i><code><span data-if="hdevelop" style="display:inline">Mode</span><span data-if="c" style="display:none">Mode</span><span data-if="cpp" style="display:none">Mode</span><span data-if="com" style="display:none">Mode</span><span data-if="dotnet" style="display:none">mode</span><span data-if="python" style="display:none">mode</span></code></i></a> = <i><span data-if="hdevelop" style="display:inline">'generalize2'</span><span data-if="c" style="display:none">"generalize2"</span><span data-if="cpp" style="display:none">"generalize2"</span><span data-if="com" style="display:none">"generalize2"</span><span data-if="dotnet" style="display:none">"generalize2"</span><span data-if="python" style="display:none">"generalize2"</span></i> can be selected.  In this
case, line segments are preserved if they end in two junction
points, even if they are shorter than <a href="#Length"><i><code><span data-if="hdevelop" style="display:inline">Length</span><span data-if="c" style="display:none">Length</span><span data-if="cpp" style="display:none">Length</span><span data-if="com" style="display:none">Length</span><span data-if="dotnet" style="display:none">length</span><span data-if="python" style="display:none">length</span></code></i></a>.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Skeleton" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Skeleton</span><span data-if="c" style="display:none">Skeleton</span><span data-if="cpp" style="display:none">Skeleton</span><span data-if="com" style="display:none">Skeleton</span><span data-if="dotnet" style="display:none">skeleton</span><span data-if="python" style="display:none">skeleton</span></code></b> (input_object)  </span><span>region <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HRegion.html">HRegion</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HRegion.html">HRegion</a></span><span data-if="c" style="display:none">Hobject</span></span>
</div>
<p class="pardesc">Skeleton of which the contours are to be determined.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Contours" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Contours</span><span data-if="c" style="display:none">Contours</span><span data-if="cpp" style="display:none">Contours</span><span data-if="com" style="display:none">Contours</span><span data-if="dotnet" style="display:none">contours</span><span data-if="python" style="display:none">contours</span></code></b> (output_object)  </span><span>xld_cont-array <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HXLDCont.html">HXLDCont</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HXLDCont.html">HXLDCont</a></span><span data-if="c" style="display:none">Hobject *</span></span>
</div>
<p class="pardesc">Resulting contours.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Length" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Length</span><span data-if="c" style="display:none">Length</span><span data-if="cpp" style="display:none">Length</span><span data-if="com" style="display:none">Length</span><span data-if="dotnet" style="display:none">length</span><span data-if="python" style="display:none">length</span></code></b> (input_control)  </span><span>integer <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">int</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (integer)</span><span data-if="dotnet" style="display:none"> (<i>int</i> / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>Hlong</i>)</span><span data-if="c" style="display:none"> (<i>Hlong</i>)</span></span>
</div>
<p class="pardesc">Minimum number of points a contour has to have.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>1</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span>1, 2, 3, 5, 10, 20</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Mode" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Mode</span><span data-if="c" style="display:none">Mode</span><span data-if="cpp" style="display:none">Mode</span><span data-if="com" style="display:none">Mode</span><span data-if="dotnet" style="display:none">mode</span><span data-if="python" style="display:none">mode</span></code></b> (input_control)  </span><span>string <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">str</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string)</span><span data-if="dotnet" style="display:none"> (<i>string</i>)</span><span data-if="cpp" style="display:none"> (<i>HString</i>)</span><span data-if="c" style="display:none"> (<i>char*</i>)</span></span>
</div>
<p class="pardesc">Contour filter mode.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>
    <span data-if="hdevelop" style="display:inline">'filter'</span>
    <span data-if="c" style="display:none">"filter"</span>
    <span data-if="cpp" style="display:none">"filter"</span>
    <span data-if="com" style="display:none">"filter"</span>
    <span data-if="dotnet" style="display:none">"filter"</span>
    <span data-if="python" style="display:none">"filter"</span>
</p>
<p class="pardesc"><span class="parcat">List of values:
      </span><span data-if="hdevelop" style="display:inline">'filter'</span><span data-if="c" style="display:none">"filter"</span><span data-if="cpp" style="display:none">"filter"</span><span data-if="com" style="display:none">"filter"</span><span data-if="dotnet" style="display:none">"filter"</span><span data-if="python" style="display:none">"filter"</span>, <span data-if="hdevelop" style="display:inline">'generalize1'</span><span data-if="c" style="display:none">"generalize1"</span><span data-if="cpp" style="display:none">"generalize1"</span><span data-if="com" style="display:none">"generalize1"</span><span data-if="dotnet" style="display:none">"generalize1"</span><span data-if="python" style="display:none">"generalize1"</span>, <span data-if="hdevelop" style="display:inline">'generalize2'</span><span data-if="c" style="display:none">"generalize2"</span><span data-if="cpp" style="display:none">"generalize2"</span><span data-if="com" style="display:none">"generalize2"</span><span data-if="dotnet" style="display:none">"generalize2"</span><span data-if="python" style="display:none">"generalize2"</span></p>
</div>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="skeleton.html"><span data-if="hdevelop" style="display:inline">skeleton</span><span data-if="c" style="display:none">skeleton</span><span data-if="cpp" style="display:none">Skeleton</span><span data-if="com" style="display:none">Skeleton</span><span data-if="dotnet" style="display:none">Skeleton</span><span data-if="python" style="display:none">skeleton</span></a></code>
</p>
<h2 id="sec_successors">可能的后置算子</h2>
<p>
<code><a href="smooth_contours_xld.html"><span data-if="hdevelop" style="display:inline">smooth_contours_xld</span><span data-if="c" style="display:none">smooth_contours_xld</span><span data-if="cpp" style="display:none">SmoothContoursXld</span><span data-if="com" style="display:none">SmoothContoursXld</span><span data-if="dotnet" style="display:none">SmoothContoursXld</span><span data-if="python" style="display:none">smooth_contours_xld</span></a></code>, 
<code><a href="get_contour_xld.html"><span data-if="hdevelop" style="display:inline">get_contour_xld</span><span data-if="c" style="display:none">get_contour_xld</span><span data-if="cpp" style="display:none">GetContourXld</span><span data-if="com" style="display:none">GetContourXld</span><span data-if="dotnet" style="display:none">GetContourXld</span><span data-if="python" style="display:none">get_contour_xld</span></a></code>, 
<code><a href="gen_polygons_xld.html"><span data-if="hdevelop" style="display:inline">gen_polygons_xld</span><span data-if="c" style="display:none">gen_polygons_xld</span><span data-if="cpp" style="display:none">GenPolygonsXld</span><span data-if="com" style="display:none">GenPolygonsXld</span><span data-if="dotnet" style="display:none">GenPolygonsXld</span><span data-if="python" style="display:none">gen_polygons_xld</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="edges_image.html"><span data-if="hdevelop" style="display:inline">edges_image</span><span data-if="c" style="display:none">edges_image</span><span data-if="cpp" style="display:none">EdgesImage</span><span data-if="com" style="display:none">EdgesImage</span><span data-if="dotnet" style="display:none">EdgesImage</span><span data-if="python" style="display:none">edges_image</span></a></code>, 
<code><a href="threshold.html"><span data-if="hdevelop" style="display:inline">threshold</span><span data-if="c" style="display:none">threshold</span><span data-if="cpp" style="display:none">Threshold</span><span data-if="com" style="display:none">Threshold</span><span data-if="dotnet" style="display:none">Threshold</span><span data-if="python" style="display:none">threshold</span></a></code>, 
<code><a href="get_region_contour.html"><span data-if="hdevelop" style="display:inline">get_region_contour</span><span data-if="c" style="display:none">get_region_contour</span><span data-if="cpp" style="display:none">GetRegionContour</span><span data-if="com" style="display:none">GetRegionContour</span><span data-if="dotnet" style="display:none">GetRegionContour</span><span data-if="python" style="display:none">get_region_contour</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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